Change the title of a <p> element:
document.getElementById("myP").title = "The Development Site";
Click the button to change the title of the p element below.
Hover over the 'java2s.com' text before and after you click the button.
<!DOCTYPE html> <html> <body> <p id="myP" title="this is a description">java2s.com</p> <button onclick="myFunction()">Test</button> <script> function myFunction() {/*w w w .j ava2s . com*/ document.getElementById("myP").title = "The Development Site"; } </script> </body> </html>